The production line took less than a year from start-up to commissioning, significantly ahead of the industry average progress, reflecting the strong engineering efficiency of Sanan in process integration and production line deployment.
1、 Hunan Base: Creating a High Ground for Domestic Silicon Carbide Vertical Integration
As of now, Hunan Sanan has initially established a complete vertical integrated industrial chain covering SiC substrate epitaxial chip manufacturing:
| link | Monthly production capacity |
| 6-inch silicon carbide substrate | 16000 pieces |
| 8-inch silicon carbide substrate | 1000 pieces |
| Epitaxial wafers (including 8 inches) | 2000 pieces |
| Silicon based gallium nitride devices | 2000 pieces |
The total investment scale of this project is 16 billion yuan, and it supports 6-inch and 8-inch process compatibility, with delivery capabilities for high-end electric vehicles, industrial control, new energy and other scenarios. It is expected to have an industry-leading scale of producing 360000 6-inch wafers and 480000 8-inch wafers annually after full production. 2、 Chongqing joint venture project: Entering the high-end automotive market. In addition to the Hunan base, the Chongqing Silicon Carbide Wafer Factory, a joint venture between Sanan and global power semiconductor giant STMicroelectronics (ST), completed production line debugging in February this year and is expected to officially start mass production in the fourth quarter of 2025. This project is positioned as China's first 8-inch SiC production line dedicated to automotive grade power devices. Once fully operational, it can achieve a weekly production of 10000 8-inch automotive grade SiC wafers, providing core semiconductor support for the drive modules and charging systems of China's new energy vehicles. 3、 Industry Observation: SiC has fully entered the window of domestication acceleration. From the rapid integration of Hunan base to the high-end mass production of Chongqing joint venture line, Sanan is building a dual wheel drive pattern with Hunan as the basic production capacity platform and Chongqing as the benchmark line for high-end automotive specifications. Combining its own SiC substrate growth, epitaxy, design, and packaging capabilities, it has become one of the most representative SiC full chain leading enterprises in China.
